A good cartoon stops you in your tracks. And as you enjoy the joke, or the accuracy of its arrow, you also admire its author for their wit and art.

For another couple of days Behind the Lines 2012 is on in Tasmania's Parliament House. It's a collection of the best political cartoons from the past year.

Jon Kudelka's work is well represented. This morning he came in and spoke with us about the challenge of creating his work and the year that's been.

And he chats about one of his most popular cartoons of last year - his analysis of the two ways to become a billionaire in Australia, a cartoon drawn in response to Gina Reinhardt's complaints about Australian worker wages.